Edge cleaning apparatus



Dec. 12, 1950 J. R. MARCUS ETAL 2,533,948

EDGE CLEANING APPARATUS 5 Sheets-Sheet 1 Filed July 11, 1945 //v vmrmsJ. A. MA RCUS f. W TURNER A TTO/P/VE'Y J. R. MARCUS ETAL EDGE CLEANINGAPPARATUS Dec. 12, 1950 Filed July 11; 1945 5 Sheets-Sheet 2 0R9. v. P.

WMT 7 NEW/M J w Dec. 12, 1950 J. R. MARCUS ETAL EDGE CLEANING APPARATUS5 Sheets-Sheet 3 Filed July 11, 1945 m/mvmes J RMA/ecus A W Tum/5R 5/JAM; law

A TOR/VF) Dec. 12, 1950 J. R. MARCUS ETAL 2,533,948

EDGE CLEANING APPARATUS 5 Sheets-Sheet 4 Filed July 11, 1945 Mg EI/VV'NTORS J. A. MARCUS r'-.' W TURNER 5/ A M- Z.

ATTOR/V) Dec. 12, 1950 MARCUS HAL 2,533,948

EDGE CLEANING APPARATUS Filed July 11, 1945 5 Sheets-Sheet 5 gagedbyasliding contact. through the winding I one edge of the card it becomesnecessary to remove the insulation from the washes and their i mountedtogether on the carriage in' position to "be individually adjusted manywith 'respectto the carriage.

"be had'by reference "'s'c'ription when considered 'in conjunction withthe accompanying drawings, wherein Patented Dec. 12, 1950 U N 1 D 15PATENT QFEF! CE "2,533,948

EDGEGLEANING APPARATUS 1! creme '3: Marcus and Frederick WI Turner,Chicagoflll fass'ignoj rs to WesterNElectric" Gompany, Incorporated,NewYork,NfiY.,a corporaltion of New Yon;

- Application'J-uly 11, 1945; Serial No; 604,462

iz'elaims.

This invention relates to: an edge vcleaning apparatus'andmoreparticularly toan apparatus for removing insulation from-the wires woundon potentiometer insulators. I

In'the manufacture of high-precision'potentiometers,- fine insulatedwire is-wound on relatively thin strips-of insulating material calledcards, the width of which may vary over a wide range, wherebythe desiredamount of conductor' -may' be WOlIIld in a givenv length of the card.After these cards have wire'wouncl'on 'them,;-they may-be assembled inpotentiometers in -position to have one edge of-the winding en-Since--the circuit must be completed along the wire along that edge.

--It is an object of the-presentinvention to provide a simple andeffective mechanism for'irapldly cleaning the-edgeof an article. H A

In accordance with one-embodiment of the invention a wound potentiometercard is clamped to -a table by spring pressed clamping devices arrangedalong the'length of the card and .the

table which receives the card. In order to-accurately locate the:card'in position on the table,

"a sage is provided for aligning the" edge of "the card which is to becleaned in position; extending apredetermined distancebeyond the edge ofthe jtable whichfsupports it in position' to be engaged by a-pair ofwire brushes r'otated'in opposite directions and driven by suitablegearing 'from a common drive means. In thepreferred forn'rof the'invention,' the-hr shes are mounted on .a carriage aligned to" travelparallel tdthe edge of the card supporting 'table by a screw'feedde'v'ice, driving means "being horizontally and ver- Acompleteunderstanding'of the invention may to the following Idetai1edfde- *Fig. 1 is a'plan vieworan apparatus e'rnbodying theinventionpart being broken away to con- "serve" space, and showing theapparatus ininop- Fig, 3 is" a reafeleva'tionalf 'view showing theapparatus asvi'ewdin the'direction o'f'the arrows along theline3-}3ofFig. l; y

" Fig.4 isa rragmemaryemargeaman view of a portion of theapparatus-shown in Fig; showing the apparatusin one of'its operativepositions wherethe brushes have started to clean the insulation fro'mthe-wire at-the edge offthe po- 5 'tentio'rneter card;

7 Fig.5 a vertical sectional view taken subs'tantially along the line5-5 of Fig. 4 in thedirection of the arrows;

'Fig. '6 is a transverse v'e'rticah sectional 1 view V onan enlargedscale taken along the 1ine76- 6 ofFig' 1 in thedirection of the arrowsand 'showing'one of the clamping mechanisms 'in'fi'tsi-noperativeposition;

Fig. '7 isa-fragmentary 'view'of the-npper'end tr enact the clampingdevices shown in apar- 'tially'operated position;

Fig. 8 is a v-i'ewof one-of theclampingmechanisms taken lookin in thedirection of the arrows along-the line 8 8 of Fig. 6;

'l lig. 9: is a transverse vertical sectional'view c'man enlarged scale,taken substantially along 'the' l-ine"99 of Rig. 4, and showing oneof-the clamping-j'fimernbers in its completely operated positionfandFig. -10 .isa sectional View taken' througn one of the potentiometercards and showing memenner' in 'whi'ohthe wire brushes engage a-n dge ofthecard for removingthe insulation 'fidhfthe ""wire'wound on the card.

I In the drawings, apotentiometer card |5 'of.'the 'ltype proce'ssed' inthis apparatus is most" clearly illustrated in Figs. 'and 10. The card15 has one Straight side or edge !E,'whereas its rear edgefi'l is ofirregular contourwhereby a desired-amount or resistance wire' 18 may bewound on the card to provide varying amounts of'resi'stance for equmsections of thelength'of the card. The'wire ll "'iscoated withinsulation such; for exfi mblelas 'enaineL'and is wound uponthecard'l5'fin' aiiy 40 j suitable winding machine, whereupon theinsiila- -'tionmust'fbe' removed from the'wire l8 atthe edge I 6 for engagement by a"sliding contact'fo'rming a part'of the potentiometer. 'The' apparatus"of'the present invention provides an effective .Wn'leans for,accomplishing the removafofsii'ch insulation. y

'The'ap'paratus includes a base member-'12 on whichthe various'parts' ofthe apparatus are mounted. "This base member hasa'plateflztsuit- 5:):'ably" secured thereto and. forming" a part ofa framework including endfr'ames 24 and'25. ""In- 'terposed between the endframes 24" and f2 5'is a "channel member 26 ."having "its lower "flange mounted ontheplate23 and carryinga renew ".o'nits' uppernange. The table2'l"is aaaptedtosupport a potentiometer card I5 during the cleaning of the forward edgeI 6 thereof. The end frames 24 and 25 extend upwardly beyond the table2! and serve to support support plates 28 and 29. Secured to andextending between the support plates 28 and 29 is a channel member '30,on which a plurality of clamping assemblies, designated generally by thenumeral 3|, are suitably mounted. All of the clamping assemblies 3| areof exactly the same construction and only one of them will be describedin detail.

In each clamping assembly there is provided a pair of push rods 32,havin enlarged lower portions 33 and reduced upper shank portions 34.The lower portions 33 of the rod 32 are slidable in suitable apertures35 formed in the lower flange of the channel member 30, whereas thereduced shank portions 34 of the push rods 32 are slidable in apertures38 in the upper flange of the channel member 30. At their lower ends,the

push rods 32 are fixed to a clamping plate 31 having a suitable clampingpad 38 of resilient material, such as felt attached thereto. Seated onthe shoulders formed at the juncture of the upper and lower portions ofthe push rods 32 are washers I 39, against which compression springs 48bear. The compression springs 48 are interposed between the washers 39and a cross plate 4 I, which is slidable with respect to the push rods32, and is interposed between the springs 49 and collars 42 suitablypinned to the push rods. Intermediate the push rods the cross plate 4|has a pivot bearing 43 mounted thereon, in which a lever 44 is pivotallymounted. The lever 44 i pivotally interconnected with an actuating lever45 by a link 46 and is interconnected with a stationary plate 41 by apair of links 48. The stationary plate 41 is, in turn, mounted upon abracket 49 fixed to the channel member 30. The stationary plate 41 iscut out to provide stops so that lever 45 can be positioned slightlybelow horizontal (Fig. 9) and slightly beyond vertical (Fig. 6), wherebythe linkage will remain in either of its extreme positions.

These clamping assemblies 3| may be individually and manually operatedto clamp potentiometer cards I5 on the table 21 under the pressure ofthe springs 48 under compression, the movement of the actuating lever 45from the position shown in Fig. 6 through the position shown in Fig. 7to the position shown in Fig. 9, serving to move the push rods 32downwardly to carry the clamping pads 38 into engagement with thepotentiometer card I5 on the table 21. It will be apparent, from aconsideration of Figs. 6 to 9, inclusive, that, in either of its extremepositions, the clamping lever 45 will tend to remain in that positionuntil moved manually therefrom.

In positioning a potentiometer card I5 on the table 21 to have the edgeof it cleaned in the apparatus, a gage member is used to position thecard for engagement by a pair of brushes GI and 62. The gage member 69comprises an angle bar mounted upon the ends of a pair of levers 63 and64 fixed to a shaft 65, which is journalled 1n journal blocks 66 fixedto the channel member 26 at spaced intervals along its length. Thelevers 63 and 64 have weights 6! and 68 at their free ends forcounterbalancing the weight of the gage member 69 and the gage membermay be held in either the position shown in Fig. 6 or the position shownin Fig. 9 by a pair of off-center spring assemblies 69. Each of theoff-center spring assemblies 69 (Fig. 9) comprises a blo 10 pivotallymounted on an end of a post 1! and carrying a rod I2. The posts II arefixed to the levers 63 and 64 and the rod 72 extends through blocks 13pivotally mounted on the end frames 24 and 25. A spring 14 is interposedbetween the blocks 70 and I3, whereby, when the levers S3 and 64 aremoved from the position shown in Fig. 6 to the position shown in Fig. 9or vice versa, the springs 14 will tend to hold the gage member 69 ineither of these positions due to the engagement of the edge of the gagemember with the web of the channel member 26 or the engagement of thelever 63 with a stop member 11 on the upper flange of the channel member26.

In the operation of the apparatus, the gage member 60 may be moved tothe position shown in Fig. 6 and a wound potentiometer card I 5 may beplaced in engagement with it and clamped in place by the clampingassemblies 3!, whereupon the levers 63 and 64 may be rocked to theposition as indicated in Fig. 9 to move the gage member out of the pathof the brushes BI and 62. When the gage member 69 is in the positionshown in Fig. 6, the weight 61 will open a switch I5 suitably mountedfrom the base 22 in position to carry its actuating button 16 in thepath of movement of the weight 61, as will be explained more in detailin connection with the description of the operation of the apparatus.

Mounted on the base member 22 (Figs. 6 and 9) is a block 88 having aguide tongue 8| extending longitudinally of it for engaging the sidewalls of a guide slot 82 formed in a carriage 83. The carriage 83 isprovided with wheels 84-84, which ride on the upper surface of the block89 and serve to support the carriage 83 for movement longitudinally ofthe base member 22 parallel to the edge of the table 21. The block 89has bearings 85 extending therefrom for rotatably supporting a feedscrew 86, which is threaded into a travelling nut 8! extending from thecarriage 83. The feed screw 86 is adapted to be driven by a motor andspeed reducer unit 88 through a conventional gear train enclosed in ahousing 89.

Mounted on the carriage 83 is a motor 90 having a driven shaft 9|carrying a drive gear 92, which meshes with a pinion 93 on a shaft 94.The shaft 94 is journalled in bearings 95 and 96 and carriesintermediate the bearings a split, adjustable pulley 91 of conventionaldesign, which may be adjusted to vary its effective diameter withrespect to a belt 99 engaging it. A pulley 98 of the same constructionas pulley 91 is mounted to be driven by the belt 99 and, by differentialadjustment of the two pulleys, their effective diameter may be adjustedto change the speed of driven pulley 38. The bearings 95 and 96 aremounted upon a plate I90, which is provided with a pair of slots I8I andI02 for receiving shouldered studs I 93 and I94, the shanks of which areencircled by springs I85 and I06. The springs I95 and I96 are interposedbetween the heads of the studs and the upper surface of the plate I89 toresiliently clamp the plate I90 on the carriage 83. The plate I99 may beslid transversely of the carriage 83 by means of a locating screw I9?threaded into a bracket I 88 on the plate I 98 and rotatably supportedin a bracket I99 on the carriage 83. The locating screw I9! is providedwith graduations, as indicated at H9, for indicating the relativeposition of the plate I90 with respect to the carriage 83.

The pulley 98, with which the belt 99 is engaged, is mounted upon ashaft III journalled plates I I and ot engagement of the rotating; theappa'ra :zgsssgere in be'arings I I Z aIid- I i 3 nand'zicarrying thewire brush 6 I 'lhe bearings I12 and I I3 are secured to a support plateI I 5;"which may' be mounted i-n" spaeed'relaticrf to'the' plate i i3 Iiby- 'int'erposing spac'er pletes H 6 be'tween the 'upper s'urface ofthe-plate Itfi 'and the supportt plate 1 I5; thus to regulate the'height'of the wire brush 6I for "a purpose I which win become apparentas=- the :de-

scri tion pro'gresses.

The' shaft 'BM asshownrn'ost clearlyinTFig; 3, -has a gear 1 I25 mountd'on 'its' rig-ht 'end for engagement with a gear -I 26 on' -a' shaft I21. The shaft lfl is journalled 'in bea'i-ingsi I28 andf I29 and carriesinteriii'ediate the 'bearings a pulley i ltapsimiiar -'to theipulley 91.The 'b'e'a'rirlgs I 23 I and I29 are mounted on apla'te' I3 i similarto-the -'p1ate we gand the' 'pia'te I 3 I may be adjusted with "respectto the'carriage' 83 by m'eans oi an" adjustment 5 Screw assembly 1 32 Ofexactly the" same con'striiction as the" assembly provided for adjustingthe plate 1 5 I39 with respectto the ca'rrlage. 'simiiariy, a belt I33;corresponding-to the belt 99, drives a pulley I34 en ai -shaft I35. Thesha'ft l35, likethe shaft I! I; carries the wire-brush m anct'is mounteuin bearmgs I31 and 53s fixed to :4 a support plate i 39. -It \v'fli'be'notedg by'referehce to Fig i that -iahe supp'orfiplate ltfi is spacedfrom the pla'te I 3 l by a slightly i greater amount 'than -the"support' plate n5 is spaced from its ijlate I 59 a spacer plate 'I '4El vrhich isslightly thicker -than-the spacer plate Ht. Thus the wirebrush 62, which rotates in -the' d ection'indicated by-the arrow(Figs.tend 1Q) 'ei-ng slightly higher-than the -brush 6-!,="wi1lengage theupper edgeof 'the wire -''I 8 wound on the potentiometer cafid fi andwill clean-theinsulation from' the wire a slight distance back from theedge It'of -the card lton the 'ueper surface, whereas-the 5 I rotatingin "the direction of the arrows ZFigs. L -and will sweep upwardlyandclean a small sectionofthebottomportion ofthe-windingof the wire I 8'and'*-wi11 Wipe"across'-the face 'ofthe wireat"the-edge lfi. lt shouldbe noted that in 'cl'ear'iing the insulation fromthe'w'vires I 8 wounuon' very thin cards I 5, it may be possible to make: the'spacer plates-H5 and M0 of the :samesize,"-but, -'-in order toclean the insulation min-wire waned: on thicker-cardsQit may-be 'advi'sable to 'locate the wirebruSheS- EEI -and- EZ as shown in the drawings. i In addition to l the-fswitch 7 operable--under control of the l'ever 63, the motor 90, whichdrives the wire bru's'hes fl and 52,-'is cont'rtilld by a pair ofautomatically operated-switches! be subplidto the motor "90 to drive thetwo I brushes 6 I- =and 82 after the larushes have' beensuitably-adjusted as-to height -by placing spacer plates of 'properthickness beneath the support it 539' and a'ftr' adjusting the depthbrushes with 1 the =wire i 8 on the cards I 5 by manipulating thelocating screws IN. When the brushes tl and "I52 are tus' is in:condition" f or op- 5 'e-ration aridy-ai'fter a potentiometer card I 5has been locked in place on the-table ZT-by proper f' the claihpingassemblies 8 I the aratus 'may be started by manipulationb operation ofthe" app removin the gagemember ifi from engagement With the card I5 'onthe table 21 to permitswitch -15 to 'close (Fig. 2).

With' the control circuit in the condition *Sh0wn:in Fig; 2, momentaryoperation of starting switch' i wwill connect current from a source I48through" closed switch 45 (closed upon-its release -byc=gage member 60),through normally closed 'stop switch I 43 switch I4 l inthe-position-shown, normally clo'sed "upper "contacts of reversing =10switch I45, norma1ly open (now closedllower contacts of switchl44,-winding of relay I46and =backto source 1'48; thus' to:energizerelay I46. "Upombeing momentarily energized; relay: I4B--w-i11lock up'over 'its locking contacts *ov'era circuit -l5 from the sourcethrough the windingpthrough contacts I49, upp'er contacts of -'switch145, s'witches I4I- and I43' in the position shownand switch'fi 'in'the"opposite position to that shown. When 'relay I 46 '-is"'energized; 'itwill supply 'current to the-motor 88 from the source through its-contacts and to'drive the'motor-ina direc'tion to move the "carriage"83 to the left; as shown'in Fig. 1. 'The carria'getii will continue to'moveto the "left iFig. 1) untila cam" I50, suitably mounted 011 thecarriage;'operates'the switch" IM to n'i'ove it from the position' shownin F-igx2 to engage- "ment withits lower contact. X When-switch" I 4 Iis reversed, 'it'will break thecircuit to the lo'cking contacts "I 49and" momentarily" supply our- 13-) rent from: the-source "I48; throughswitch 15, now closed;-througlr 'stop switch l43ylower contact ofswitch" I 4 i upper: contacts ofiswitch" I44 inthe position shown"switch 142; to the-winding of reIay -IM and 'baclr'to the source -I48.Inthis 35 --manner, relay "I41 will' be*energized to reverse the'connectionsfrom-the source I 48 to the motor 88,= thusto cause themotor to run vin-the opposite direction. Momentary energization of relayI41 will complete a'lockingcircuit for the relay'from r-source I48=through" switch; now closed, stop -switch' I 43; locking contacts -I 5 Iupper contacts of switch 244;: switcl'r 142, through the vvi'nding of:the'relayand baok-to the-'source448. Power -x'vi1l continue to be 1supplied to v the :motor "83 41-3 through thecontacts' of rel-ay 141until I the carriage 83 reaches the endw-of its t'ra'velto the i right:(Fig. 1) theieft' (Fig.3) where cam I50 will operate switch I 42 andstop-the operation 'of the= motor:88 aften the'earriage 83 'has returned50 to= 'its -normahpos'ition. In the event that it is "desired-to stopthe operation'of the apparatus at any -time, stop -switch I43 may beoperated to -brealr any=existing circuitto'either the relays I46 or "I4T and ii itis :desirecb to reverse the direc- --tion oftravelof thecarriage 83; switch I may -be-operated momentarily 'to open: its uppercontact and close its lower contact, thereby to supe ply- :po-werim-momentarily energizing the relay l Q5? pwvhibh tvill then-lock=-u1:rover acircuit from 560 source" 48 through switch I 15 switchM3,: locki ing contacts liigeupper' contacts-of switch I44 and-"switchI42 and-"winding 'of i'elay I4'I back 'to' the: source I 4 3. "Thus; inthe operation "of the appara-tua' momentary *Operation of the startingiss switch M4, if switch-l5- has been closed 'by mo'v- 'ng 171182 gagemember' fiflout' of the; path of the brushes 'fii and 62,"w-ill initiatea cycle of operation 'which"will cause the carriage 83 to :move thefull-length of the :card It and' back to its 0* starting. position "toremove' the insulation from i the wire' -wound 'on the card- I at the"edge? I 6.

":What is "claimedis:

1. An edge cleaning appai atus 'compri'sing means 'ror supporting ana'rticle tn za-n edge 5 3 thereof in a reoeter-mined position; a?gage-mem- PT I her mounted on said supporting means and movable to andfrom operative and inoperative positions and operable in said operativepositions for receiving an edge of an article thereagainst to locatesaid edge in said position, edge cleaning brushes, a carriage forcarrying said brushes along said edge, means for driving said carriage,means including a switch member for supplying power to said drivingmeans, said switch member being actuatable by said gage in its operativeposition to render said means for supplying power inoperative, andindividually operable means on said carriage for individually adjustingthe brushes toward and away from said edge.

2. In an edge cleaning apparatus, a stationary table for receiving anarticle, the edge of which is to be cleaned, a gage, means mounting saidgage for movement with respect to said table, means limiting themovement of said gage in one direction to an operative position tocooperate with said table for aligning the edge of the article in apredetermined position, means for clamping said article in alignedposition on said table, means limiting the movement of said gage in theopposite direction to an inoperative position to expose the edge of saidarticle on said table, a carriage, means guiding said carriage formovement parallel to the edge of an article in said predeterminedposition, reversible drive means for said carriage, means to move saidcarriage in one direction for initiating operation of said drive means,means operable by said carriage for reversing the operation of the drivemeans to move said carriage in reverse direction, means mounted on saidcarriage for brushing the edge of the article, and means responsive tosaid gage means in its operative position for rendering the drive meansinoperative.

3. In an edge cleaning apparatus, a table having a straight edge, meansfor holding an article on said table with its edge portion arranged inoverlying and parallel relation to the straight edge of said table,track means extending parallel to said edge of the table, a carriagemovable along said track means, means for driving said carriage, a pairof brush supporting plates on said carriage, a rotary brmh mounted oneach of said plates to rotate about substantially aligned axes parallelto said track means, drive means on said carriage including a motor forrotating said brushes in opposite directions, means individual to eachof said plates for adjusting the position of the plates transversely ofthe carriage, and means for adjustably positioning each brush in spacedrelation to its associated plate.

4. An edge cleaning apparatus comprising a carriage, means guiding saidcarriage for movement along a predetermined path, a pair of rotarybrushes, means individual to each brush mounted on said carriage forsupporting said brushes for rotation about axes in substantial alignmentand parallel to the path of travel of said carriage, drive means on saidcarriage including a motor for rotating said brushes in opposite directions, means for supporting an article with its edge parallel to thepath of travel of said carriage and in position to be engaged by saidrotary brushes, and means on said carriage for adjusting the brushestransversely with respect to the path of travel of the carriage and tothe edge of the article.

5. An edge cleaning apparatus comprising a carriage, drive means formoving said carriage Cal along a predetermined path, a pair of rotarybrushes, means individual to each brush mounted on said carriage forsupporting said brushes for rotation about axes in substantial alignmentand parallel to the path of travel of said carriage, drive means on saidcarriage including a motor for driving said rotary brushes in oppositedirections, means for supporting an article with its edge parallel tothe path of travel of said carriage and in position to be engaged bysaid rotary brushes, means for individually adjusting said rotarybrushes transversely on said carriage toward and away from the edge ofsaid article, and means for individually adjusting said brushesvertically on said carriage to regulate the relative height thereof.

6. An edge cleaning apparatus comprising a carriage, drive means formoving said carriage along a predetermined path, a table spacedlaterally from said carriage and parallel to the path of movementthereof for supporting an article with an edge to be cleaned, a gagemovable transversely of the table to and from an operative positionadjacent said table and an inop erative position removed from said tableand operable in said operative position to align said article with theedge thereof parallel to the path of movement of said carriage, meansfor clamping said article against said table, and means on said carriagefor engaging and cleaning the edge of said article on said table inresponse to the movement of said carriage.

'7. An edge cleaning apparatus comprising a carriage, a rotary brushmounted on said car- F riage for rotation about its axis, means forrotating said brush, means guiding said carriage for movement in a pathparallel to the axis of said brush, a table spaced laterally from saidcarriage and parallel to the path of movement thereof and having asurface in a plane parallel to the axis of said brush for supporting anarticle to be cleaned, a gage mounted for movement to and from anoperative position on said table and operable in said operative positionto align the edge of an article moved thereagainst in parallel relationto the axis of said brush and in position to be engaged by said brush,means for clamping said article in aligned position on said table, drivemeans including a motor for moving said carriage, and means including aswitch for supplying power to said driving means, said switch beingactuated by said gage in its operative position to render inoperativesaid means for supplying power.

8. An edge cleaning apparatus comprising a carriage, means guiding saidcarriage for movement along a predetermined path, a pair of rotarybrushes, means individual to each brush mounted on said carriage forsupporting said brushes for rotation about axes in substantial alignmentand parallel to the path of movement of said carriage, drive means onsaid carriage for rotating said brushes in opposite directions, a tablespaced laterally from said carriage and parallel to the path of movementthereof and having a-surface in a plane parallel to the axes of saidbrushes for supporting an article to be cleaned, a gage, means mountingsaid gage for movement transversely of said table to and from anoperative position adjacent said table and an inoperative positionremoved from said table, said gage in its operative position serving toalign the edge of an article positioned thereagainst parallel to theaxes of said brushes, clamps for clamping said article on said table,means for adjusting said rotary brushes on said carriage transversely tothe path of movement thereof toward and away from the edge of an articleon said table, and means for individually adjusting said brushesvertically on said carriage to regulate the relative height thereof.

9. An edge cleaning apparatus comprising a carriage, a reversible drivemeans including a motor for moving said carriage along a predeterminedpath, means operable to start the drive means to move said carriage inone direction, means controlled by said carriage to reverse said drivemeans to move said carriage in the reverse direction, a rotary brushmounted for rotation on said carriage about an axis parallel to the pathof movement of said carriage, driving means on said carriage forrotating said brush, a table spaced laterally from said carriage andparallel to the path of movement thereof and having a surface in a planeparallel to the axis of rotation of said brush for supporting an articleto be cleaned, a gage, means mounting said gage for movementtransversely of said table to and from an operative position adjacentsaid table and an inoperative position spaced from said table, said gagein its operative position serving to align the edge of an articlepositioned thereagainst parallel to the axis of rotation of said brushand in position to be engaged by said brush, means for clamping saidarticle on said table, and means on said carriage for adjusting saidbrush transversely of said carriage and toward and away from the edge ofan article on said table.

10. In an apparatus for cleaning a longitudinal edge of an elongatedrelatively flexible substans tially flat article, the combination of atable having a flat surface for supporting said article thereon, a gagehaving a gaging surface engageable with the longitudinal edge of anarticle to be cleaned, means pivotally supporting said gage for movementin a predetermined path relative to said table, means limiting themovement of said gage in one direction to stop said gage in an operativeposition adjacent said table and with the gaging surface positionedtransversely of said supporting surface for aligning in a predeterminedposition the edge of an article moved thereagainst, a plurality ofclamps arranged to engage said article at spaced intervals and clampsaid article in aligned position against said table, a

means limiting the movement of said gage in the opposite direction tostop the gage in an inoperative position spaced from said table toexpose the edge of said article, and means for holding said gage ineither its operative or inoperative position.

11. An apparatus for cleaning a longitudinal edge of an elongatedrelatively flexible substantially flat article comprising a carriage, arotary brush mounted on said carriage for rotation about its axis, drivemeans for rotating said brush, means guiding said carriage for movementin a path parallel to the axis of said brush, a table for supporting anarticle thereon, said table having a fiat surface in a plane parallel tothe axis of said brush and a straight edge substantially parallel to theaxis of said brush, a gage having a gaging surface engageable with thelongitudinal edge of an article to be cleaned, means pivotallysupporting said gage for movement in a direction transverse to saidtable,

means limiting the movement of said gage in one direction to stop saidgage in an operative position adjacent said table and with the gagingsurface positioned transversely of said supporting surface for aligningthe edge of an article moved thereagainst in parallel relationship withthe axis of said brush and in position to be engaged by said brush, aplurality of clamps arranged to engage said article at spaced intervalsto clamp said article in aligned position against said table, meanslimiting the movement of said gage in the opposite direction to stop thegage in an inoperative position spaced from said table to expose theedge of said article, and means for holding said gage in either itsoperative or inoperative position.

12. An apparatus for cleaning a longitudinal edge of an elongatedrelatively flexible substantially flat article comprising a carriage, arotary brush mounted on said carriage for rotation about its axis, meansfor rotating said brush, means guiding said carriage for movement in apath parallel to the axis of said brush, a table for supporting anarticle thereon, said table having a flat surface in a plane parallel tothe axis of said brush and having a straight edge substantially parallelto the axis of said brush, a gage having a gaging surface engageablewith the longitudinal edge of an article to be cleaned, means mountingsaid gage for movement in a direction transverse to said table, meanslimiting the movement of said gage in one direction to stop said gage inan operative position adjacent said table with the gage surfacepositioned transversely of said supporting surface for aligning the edgeof an article moved thereagainst in parallel relationship with the axisof said brush and in position to be engaged by said brush, means toclamp said article in aligned position against said table, meanslimiting the movement of said gage in the opposite direction to stop thegage in an inoperative position to expose the edge of said article,means for holding said gage in either its operative or inoperativeposition, motor driven means for moving said carriage, and meansincluding a switch for supplying power to said motor driven means, saidswitch being actuatable by said gage in its operative position to renderinoperative said means for supplying power.

JEROME R. MARCUS. FREDERICK W. TURNER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 277,882 Carr May 22, 1883 492,451Winkley Feb. 28, 1893 732,767 Metzner July 7, 1903 1,097,953 Vogel May26, 1914 1,436,464 Sundh Nov. 21, 1922 1,448,518 Brown Mar. 13, 19231,588,542 Fox June 15, 1926 1,769,870 Traud July 1, 1930 1,887,571Wilson Nov. 15, 1932 1,952,334 Robinson Mar. 27, 1934 2,180,570 WalperNov. 21, 1939

